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c.o.的英文翻译是什么意思，词典释义与在线翻译：
英英释义
名词 co:
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an odorless very poisonous gas that is a product of incomplete combustion of carbon
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a hard ferromagnetic silver-white bivalent or trivalent metallic element; a trace element in plant and animal nutrition
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one who refuses to serve in the armed forces on grounds of conscience
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a state in west central United States in the Rocky Mountains
